Rotary-gas-valve case



i May 14, 1929.

Filed March 25, 1927 3 Sheets-Sheet l May 14, 1929. A. w. ANDERSON ROTARY GAS VAL E CASE 3 Sheets-Sheet 2 Filed March 25, 1927 NIW N X 2 we 3 3 3 6 3 3 3 w a. M w 3. 1 3 u m 3 rmwL M rmwL 3 3 -1 2 M u r iw n 3 M w 3 h 3 $81 3 I W. Q Li L? an 10% 2 i 0 3 a? 3 i 3 m w 2 v Q u l mIE x 06 q R nm a 2 w n \I 2 Q U 8 *m an .m Kl

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May 14, 1929. A. w. ANDERSON ROTARY GAS VALVE CASE Filed March 25, 1927 III,

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- UNITED STA-TES ALBAN w. ANDERSON, or nnooivmveiroiv, rumors.

- nOTARY- ASWALVE CASE. v

Application-filed March 25; 1927; Seria 1s No, 178,3s'.

, This inventio'n'relates to rotary valves for "internal combustion engines and more particularly to rotary valves simultaneously serving a plurality of cylinders of anengine of th four cycle type.

1 Such valves necessarily include a housing structure within which the valve rotates and in devicesof this character with which'I am familiar, this wall beingisolated from the heat of the exhaust gases controlled bythe valveii's ,notso, highly heated as the valve,

with the result that there is a tendency to unequal-expansion which is attended by sticking and scoring of'the'valve. Accordingly, an important object of theinvent-ion is;to provide a housing structure for supporting the valve in which the housing is subjected to temperatures similar to those to which the valveis subjected, so that a substantially equal expansion will result and there will be no binding or scoring. V

v A further and more specific object of the invention is to provide a structure such that the exhaust gases may be circulated about thehousing in controllable quantitiesso that this 'housing is heated with a controllable hat tomaintain the even temperature above referred to. p

A. stilllfurtherobject of the invention s to provide aconstruction such that the period during vhich the exhaust gas remains inthe'valve proper is materlally reduced, so

tration is shown a preferred" embodiment of that thereis not so muchtendency to highheatingof'the valve and, at the same t11ne,a construction is provided wherebythe incom- I ingf'gas'which isrelatively cool andhas a my invention and wherein .Figurel's av'ertical transverse sectional view" through an engmeembodymg rotary valve/mechanism constructed in accordance with myinventio n; v in p Figure 2 is a plan of the rotary valve element removed;

' seetionon the line 3*?) of Figure 3 is a I igure1; .,:v .V Figure 4 is a vsection onthe line 4 1 of Figure-1;, I 7 7 I ,Figure 5 is a top plan View of the Valve cases E NIT7-TQFF1C,E

ure 4, the valve eelementjbeingiremoved and a slightly modified case construction'i 'illus trated.

Referring now more particularly to the drawings, in which, for the upurpose of il-,-f lustratlon, I have shown an L-hea'd'engine, this engine includes the usualoi1basehcrank" case 5,' cylinder block 6, and head 7. Within the cyl nder operates the usual piston 8.1 The space 9 above each cylinder within 'the 'headl 1s plOVlClBCl with an outlet port 63. Avalve case 12 at present shown as secured to th head by bolts 13 extends beneath the ever:

hang of the head and isprovided with'ports 35 aligning with the ports 63 of the h'ead. Arranged within thecase is a valve housing, 34c connected with the case bythe walls 361 .of the ports 35 these ports 35 opening to the interiorof the housing.

1 1 v At opposite sides of its longitudinal' cen-' ter, the housing is further connected with the case by the 'walls38 of the inlet ports 37 i V:

which, through manifolds 62, may be con nected with a .source ofexplosiveniixt'urej The case is still jfurther connected fto fltihe housing by the walls-46 of oilfports' ;.45

which are distributed longitudinally of the housing structure and at theexterior of thef; case are in communication 'with oil feed, conduit 44 which maybe supplied from any,

suitable source. I In all constructions, the;

case 12 will he provided intermediate ends thereof with an exhaust port 52.

Figure 1, this exhaust port is shown as 00.1 11 municating directly with the exhaust manifold, while vin Figures 4 and 6, the communication is controlled bya damper. In the construction of Figure 4, thei d amper 57 I is imperforate'while in Figure 6,1the dampen 58 -is formed with} an opening 59;, "Ineither situation, the damper employed maybe either perforate or i nperforate,. depending upon the particular engine orvtype of engine with which it is employed; At one end, the

case is provided with an exhaust port-151 preferably controlled by a damper 54 illustrated in Figures 4: and5,although this damper ;may be omitted, as illustrated (As' .at' present dis-j closed, the-port 51 is formed in a head 51*? Figure 3, if desired.

for one end of the casing 12" and; adapted for connection with the exhaust manifoldl In the modification illustrated in Figure 6,

a damper 55 is employed having 'arperfora 1 v A tion 56 tocontrol the passage of exhaust" Figure 6 is a view similar tothat of Figgases. Optionally, the housing may bepro v the valve structure and the conduit 22 directly through the end wall.' Ihe conduit vided in ritsside wall adjacent its opposite end with a further exhaust outlet 53, as disclosed in F1gurei6. This exhaust outlet will be controlled by a damper 60 having an through the ports 27 in. the valve wall which, align. with the ports 37. Theports 29 are, in communication with a conduit 2201' 23' which is concentric with the valve wall and has passageswconnecting with each of the ports. In the present illustration, where a six cylinder engine is employed, the conduits 22 and 23 each take care of the exhaust ofthree cylinders at one end' of the engine and each communicate at their inner ends withone of the ports 29 on opposite sides ofiifthe transverse medial line of the valve. From this point, they extend to the end of opens 23 which terminates at the closed end of the valve is provided with an annular port 31 opening through theside wall of the valve beyond the end of the housing 34:. It will be obvious that the exhaust from-the three front cylinders will passthrough the con duit23 and out, through the port 31-to the space- 32; between the valve case and valve hOLIsing. If the outlet 53 is not employed,

all' of this gas mustpass rearwardly to the outlet 52cand in its passage, move. about theexterior of the housing 34 to heat the same. All of the gasesfroin the reartbree cylinders pass through the conduit 22 through the rear end of the valve to escape by the port 51. If the port 51 restricts the flow of these gases or the flow of these gases is restricted by the damper 54: or 55, a por tion or all of these gases must return through the space32 to the port 52.

In the use of the device, assuming'ouly the exhaust ports 51 and 52 are employed in the valve case, regulation of the dampers is resorted to until expansion of the case-3l at-ditferent speeds of the engine is the same asthat of the valve, after whichthe dampers are fixed. The same process followed where the j three exhaust ports 51, 52 and 53 are employed. It will be obvious that with the latter construction, the amount of gas passingthrough the opening 52 may range anywhere from zero to the entire ex haust of 'all of the cylinders and by this structure, a particularly fine graduation of the degree 01" heat to which the case is subjected may be had. Regulation of these dampers is preferably accomplished by simply substituting one damper element for another until the proper relation of the openings has been determined. Once this has been determined,Ethe damper elements may be employed as fixtures and there is no necessity for adjustment thereof during operation of the engine.

It will also be obvious that with the constructioi'l employed, the incoming gases pass about the conduits 22 and 23 and are heated thereby.- In absorbing heat from these con duits, the conduits are cooled so that the valve will not be heated to an excessive de gree and thus prevent heating of the case to such an extent, tnat,between the heat of the valvean d the case, injected lubricant will be charred and destroyed.

valve may be effected from the crank shaft in any suitable manner. In the present in stance, the crank shaft 14. is connected with the valve through timing gearing l5 and '16,"

by means of which a driving chain 19 is actu-' 'ated.

Since the construction employed is obviously capable of certain range of change and modification to adapt the sameto different types of engines without in any manner departing from the spirit of the invention, I do notlnnit myself to such specific structure except as hereinafterclaimed.

I cla1m:

1. In rotary valve mechanism for internalcombustion engines, a case, a housing within and supported from and in spaced'relation to the lease, a valve rotatable in the housing having intake and exhaust ports, connec-'' tions between the exhaust ports conducting Operation of the exhaust. gases passing therethrough to the ends of the housing and intovthe spacebetween the case and housing, the case having an exhaust port leading therefrom at a point intermediate the ends of the housing.

2. In rotary valve mechan sm for internal combustion engines, a case, a" housing within and supported from and in spaced relation to the case, a valve rotatable 1n the housing having intake and exhaust ports, connections between the exhaust ports conducting exhaust gasespassing therethrough to theends of the housing and into the space between the case andhousing, the case havingan exhaust port leading therefrom at a point: in-

having intake and exhaust ports, connec tions' between the exhaust ports conducting exhaust gases passing therethrough tofthe ends of the/housing and into the space bete -mediate the ends of the housing, ja fure point intermediate the ends of the housing,

and further exhaust ports leading therefrom at the ends thereof.

s 4. In rotary valve mechanism for internal combustion engines, a case, a housing within and supported from and in spaced relation to the case, a valve rotatable 1n the housing having intake and exhaust ports, connections between the exhaust portsconducting exhaust gases passing therethrough to the ends of the housing and into the space between the case and housing, the case having an exhaust port leading therefrom at a point intermediate the ends of the housing, further exhaustorts leadingtherefrom at the ends thereo and'means for controlling the effective area of said exhaust ports.

5. In rotary valve mechanism for internal combustion engines, a case, a housing within and supported from and in spaced relation to the case, a valve rotatable in the housing having intake and exhaust ports, connections between the exhaust ports conducting exhaust gases passing therethrough to the ends of the housing and into the space between the case and housing, the case hav ing an exhaust port leading therefrom at spaced relation a point intermediate the ends of the hous-' ing, the portsvincluding a pair of conduits arranged within the valve and having their walls in to said intake ports.

6. In rotary Valve mechanlsnr for internal combustion engines, a case,'ahous1ng within and supported'from andin spaced relation.

to the case, a valve rotatable in the housing having intake and exhaust ports, connections between the exhaust ports conducting exhaust gases passing therethrough to the ends of'the housing and into the space between the case and housing, the case having an exhaust port leading therefromat a point intermediate the ends of the housing, the connections" between said exhaust ports including a pair of conduits arranged within the valve and having their walls in s aced relation thereto and means for con ucting incoming fuel about said conduits to said intake ports, each of said conduits-communieating at its inner end with one of exhaust verse medial line of the valve and at its op- ALBAN W. ANDERSON.

connections between said exhaust thereto and means for conducting incoming fuel about said conduits 55' ports lying at opposite sides of the transposite'end opening at an end of the valve. V 

